Correct way to parse JSON string in Python

Question

I have the string:

'[\'{"cx":3575,"cy":1657,"r":98}\', \'{"cx":3284,"cy":1706,"r":81}\', \'{"cx":4260,"cy":1611,"r":97}\', \'{"cx":3350,"cy":1632,"r":60}\', \'{"cx":3475,"cy":1586,"r":77}\', \'{"cx":4243,"cy":1474,"r":87}\']'

How I can get correct array of dicts from this?

ok, json.loads(str_js.replace("'", "")) works just fine, I spent half an hour trying rid off backslashes. — Dmitry Sokolov, Oct 30 '22 at 04:56
@MarkTolonen why is not valid? I get it from pandas dataframe. Original looks like: ['{"cx":2549,"cy":2329,"r":80}', '{"cx":2437,"cy":2321,"r":74}'] Is it valid? — Dmitry Sokolov, Oct 30 '22 at 07:17
No the single quotes are not valid. That’s why you had to remove them. — Mark Tolonen, Oct 30 '22 at 15:38

score 0 · Answer 1 · answered Oct 30 '22 at 04:55

Could you do something like this?

import ast

string = '[\'{"cx":3575,"cy":1657,"r":98}\', \'{"cx":3284,"cy":1706,"r":81}\', \'{"cx":4260,"cy":1611,"r":97}\', \'{"cx":3350,"cy":1632,"r":60}\', \'{"cx":3475,"cy":1586,"r":77}\', \'{"cx":4243,"cy":1474,"r":87}\']'

# Convert string to list
arr = ast.literal_eval(string)

# Convert list of strings to list of dicts
arr = [ast.literal_eval(item) for item in arr]

Correct way to parse JSON string in Python

1 Answers1